...
took off my muffler....
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MBWorld Fanatic!
Joined: Jun 2003
Posts: 2,081
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From: Indiana
1986 560SEL, 97 BMW 740iL
LOL, you probably saw a Renntech or something along that line. Really, then you should consider having Kleenman or Renntech to modify your car to get that kind of hp. You'd probably gain 2 seconds or less to reach 60 if that's important to you. Right now you get some unhappy neighbors and hairline gain in performance. Good luck and enjoy your ride. I am sure it's very nice already.
Member
Joined: Feb 2003
Posts: 99
Likes: 0
Removing the muffler may or may not hurt velocity within the exhaust system. It is velocity NOT backpressure that is wanted. Backpressure does NOT increase low/mid RPM power/torque. This is a wives tale due to the fact that increasing exhaust pipe diameter and/or other seemingly good ways to decrease pressure actually hurt low/mid RPM performance. The culprit is a loss of velocity. Ideally, you would maintain low/mid RPM exhaust velocity, and thus maintain scavenging while not creating any high RPM backpressure.
So, you may or may not have gained any usable power but you definitely lost some weight
:p 
So, you may or may not have gained any usable power but you definitely lost some weight
:p
Super Member
Joined: Apr 2002
Posts: 592
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From: Sacramento
AMG C43, 1999
CL600,
You probably gained some Hp, but all the way back at the muffler does not change the velocity of the exhaust flow much unless your stock muffler had really high amounts of backpressure.
I would guess that the Cat Convertors near the motor are the controlling factor to backpressure, besides a poorly designed header/manifold.
And JBrady is right the backpressure comments about losing low and midrange Hp are wifes tales.
Jeff
You probably gained some Hp, but all the way back at the muffler does not change the velocity of the exhaust flow much unless your stock muffler had really high amounts of backpressure.
I would guess that the Cat Convertors near the motor are the controlling factor to backpressure, besides a poorly designed header/manifold.
And JBrady is right the backpressure comments about losing low and midrange Hp are wifes tales.
Jeff
MBWorld Fanatic!
Joined: Nov 2001
Posts: 3,744
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Originally posted by CL600_W140
Sounds good tho!
really loud in a good way.. but, if I am losing proformance.. then forget it.. I will put back the orginal muff.
Sounds good tho!
really loud in a good way.. but, if I am losing proformance.. then forget it.. I will put back the orginal muff.
MBWorld Fanatic!
Joined: Jan 2003
Posts: 2,488
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A bucket on wheels
why dont you just buy a porsche? a cl600 is a pretty heavy car it would be ridiculous to spend so much money on renntech mods when you can just invest that much in a lighter, cheaper car. Also why didn't you buy the cl55 amg if you wanted a sportier car? although they do register as having pretty much the same 0-60 times...the amg is deff sportier and lighter.
Member
Joined: Dec 2001
Posts: 169
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From: New York City
C230 Kompressor SPORTS COUPE
The 600 is a turbo is it not? Couldn't you chip it or install larger turbo's? If I remember correctly the new V-12 is just a de-tuned version of the engine in the Maybach, so with some tweeking should put out the same power.
Member
Joined: Dec 2001
Posts: 169
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From: New York City
C230 Kompressor SPORTS COUPE
From MB's website on the CL600
Engine Intercooled twin-turbocharged 5,513-cc SOHC 36-valve 60° V-12. Two-piece high-pressure die-cast alloy cylinder block. Alloy heads and pistons. Die-cast magnesium cylinder head covers.
Engine Intercooled twin-turbocharged 5,513-cc SOHC 36-valve 60° V-12. Two-piece high-pressure die-cast alloy cylinder block. Alloy heads and pistons. Die-cast magnesium cylinder head covers.
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Joined: Jul 2003
Posts: 92
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From: Edmonds, WA
94 Wagon, 13 ML63
Yeah, thats the new one. I was talking about the "old" 600 engines. If he has the newer forced inducted engine, then yeah, I agree! Get a chip and redo the exhaust! If you want mondo power, up the boost to the maximun safe specs and see what kind of power you're pushing. Hehe, please include dyno graphs 
